Package

is-regex

Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag

v1.2.1, 12 Dec 2024MITCommonJSTypes: Bundled

$ npm install is-regex

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 79.7m; +57% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 4; Direct, from package.json
Last release: 1 year ago; v1.2.1
GitHub stars: 24; 10 forks
Open issues / PRs: 1 / 0
Contributors: 4
Commits, last 52 weeks: 6

Downloads

Last week 2026-09-15 to 2026-09-21

Weekly npm downloads, one point per week, weeks starting 23 Sept 2025 to 15 Sept 2026. The y axis starts at zero.

79,710,573 downloads last week, 362,575,834 in the last month. The 12-month change of +57% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: 014 in total
Latest version: 1.2.1, 12 Dec 20241 year ago
First published: 15 Jan 2014
Last push to GitHub: 8 Apr 2026169 days before the snapshot
Repository archived: No
Open issues: 1
Open pull requests: 0
Commits, last 52 weeks: 6
Dependents on npm: 1,413

Major versions

v1 first release 1.0.0, 19 May 2014
v0 first release 0.0.0, 15 Jan 2014

Recent releases

Version	Published
1.2.1	12 Dec 2024
1.2.0	30 Nov 2024
1.1.4	6 Aug 2021
1.1.3	8 May 2021
1.1.2	1 Feb 2021
1.1.1	4 Aug 2020
1.1.0	4 Jun 2020
1.0.5	15 Dec 2019
1.0.4	18 Feb 2017
1.0.3	30 Jan 2015
1.0.2	29 Jan 2015
1.0.1	28 Jan 2015
1.0.0	19 May 2014
0.0.0	15 Jan 2014

Compatibility

Module format: CommonJSFrom package.json type, main and exports fields
TypeScript types: Bundled
Node.js engine range: >= 0.4
Runtimes: -
Unpacked size (npm): 35 kB
Dependencies (4): gopdhasowncall-boundhas-tostringtag

Install

npm install is-regex

CDN

jsDelivrhttps://cdn.jsdelivr.net/npm/is-regex@1.2.1/
unpkghttps://unpkg.com/is-regex@1.2.1/
esm.shhttps://esm.sh/is-regex@1.2.1

Sources: npm registry, npm downloads API, GitHub API. Data fetched 25 Sept 2026.

Indexability: Not indexed (discovery only): no category.